How do I fix my "home" button so it directs readers to my site?

I tried to change my site address, it never worked. When I would type in the address thebigapple.wordpress.com I would get redirected to a message saying that blog was not available. So I changed the address back to it's original beautynblisss.wordpress.com
No problem
However, the "HOME" button on my page still directs to thebigapple.wordpress.com with the message that the blog is unavailable.
How can I solve this?
Thank you for your time

You're using a custom menu. Go to Appearance > Menus and edit the menu: remove the current "Home" item, click View All in the Pages module, select the Home item you'll see, click Add to Menu, drag to reposition, save.